src/sqlnetwork/SqlNwConnection.cxx

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Prabakaran Thirumalai   *
   3  *   praba_tuty@yahoo.com   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #include <SqlNwConnection.h>
  21 #include <Network.h>
  22 #include<os.h>
  23 #include <CSql.h>
  24
  25 DbRetVal SqlNwConnection::connect (char *user, char * pass)
  26 {
  27     DbRetVal rv = OK;
  28     if (isConnOpen) {
  29         printError(ErrAlready, "Connection is already open");
  30         return ErrAlready;
  31     }
  32     nwClient = new TCPClient();
  33     int bufsize = 2 * IDENTIFIER_LENGTH;
  34     // char hostName[IDENTIFIER_LENGTH];
  35     // memset(hostName, 0, IDENTIFIER_LENGTH);
  36     //os::gethostname(hostName, IDENTIFIER_LENGTH);
  37     nwClient->setHost(hostname, port, 123);
  38     rv = nwClient->connect();
  39     if (rv != OK) {
  40         printError(rv, "Connection failed");
  41         return rv;
  42     }
  43     SqlPacketConnect *pkt = new SqlPacketConnect();
  44     pkt->setConnParam(user, pass);
  45     pkt->setBufferSize(bufsize);
  46     char * buffer = (char *) malloc(bufsize);
  47     pkt->setBuffer(buffer);
  48     pkt->marshall();
  49     rv = send(SQL_NW_PKT_CONNECT, buffer, bufsize);
  50     if (rv != OK) {
  51         printError(rv, "Data could not be sent");
  52         return rv;
  53     }
  54     int response = 0;
  55     rv = nwClient->receive();
  56     ResponsePacket *rpkt = (ResponsePacket *) ((TCPClient *)nwClient)->respPkt;
  57     char *ptr = (char *) &rpkt->retVal;
  58     if (*ptr != 1) {
  59         printError(ErrPeerResponse, "%s", rpkt->errorString);
  60         nwClient->disconnect();
  61         delete nwClient;
  62         delete pkt;
  63         return ErrPeerResponse;
  64     }
  65     isConnOpen = true;
  66     delete pkt;
  67     return rv;
  68 }
  69 DbRetVal SqlNwConnection::disconnect()
  70 {
  71     DbRetVal rv = OK;
  72     if (! isConnOpen) {
  73         printError(ErrNoConnection, "No connection present");
  74         return ErrNoConnection;
  75     }
  76     rv = nwClient->disconnect();
  77     isConnOpen=false;
  78     delete nwClient;
  79     return rv;
  80 }
  81
  82 DbRetVal SqlNwConnection::beginTrans(IsolationLevel isoLevel, TransSyncMode mode)
  83 {
  84    if (! isConnOpen) {
  85         printError(ErrNoConnection, "No connection present");
  86         return ErrNoConnection;
  87     }
  88     return OK;
  89 }
  90
  91 DbRetVal SqlNwConnection::commit()
  92 {
  93     if (! isConnOpen) {
  94         printError(ErrNoConnection, "No connection present");
  95         return ErrNoConnection;
  96     }
  97     DbRetVal rv = OK;
  98     rv = nwClient->send(SQL_NW_PKT_COMMIT, NULL, 0);
  99     int response = 0;
 100     return nwClient->receive();
 101 }
 102
 103 DbRetVal SqlNwConnection::rollback()
 104 {
 105     if (! isConnOpen) {
 106         printError(ErrNoConnection, "No connection present");
 107         return ErrNoConnection;
 108     }
 109     DbRetVal rv = OK;
 110     rv = nwClient->send(SQL_NW_PKT_ROLLBACK, NULL, 0);
 111     int response = 0;
 112     return nwClient->receive();
 113 }
 114